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ReStructuredText
187 lines
9.5 KiB
ReStructuredText
:github_url: hide
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.. DO NOT EDIT THIS FILE!!!
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.. Generated automatically from Godot engine sources.
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.. Generator: https://github.com/godotengine/godot/tree/4.3/doc/tools/make_rst.py.
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.. XML source: https://github.com/godotengine/godot/tree/4.3/doc/classes/HeightMapShape3D.xml.
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.. _class_HeightMapShape3D:
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HeightMapShape3D
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================
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**Inherits:** :ref:`Shape3D<class_Shape3D>` **<** :ref:`Resource<class_Resource>` **<** :ref:`RefCounted<class_RefCounted>` **<** :ref:`Object<class_Object>`
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A 3D height map shape used for physics collision.
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.. rst-class:: classref-introduction-group
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Description
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-----------
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A 3D heightmap shape, intended for use in physics. Usually used to provide a shape for a :ref:`CollisionShape3D<class_CollisionShape3D>`. This is useful for terrain, but it is limited as overhangs (such as caves) cannot be stored. Holes in a **HeightMapShape3D** are created by assigning very low values to points in the desired area.
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\ **Performance:** **HeightMapShape3D** is faster to check collisions against than :ref:`ConcavePolygonShape3D<class_ConcavePolygonShape3D>`, but it is significantly slower than primitive shapes like :ref:`BoxShape3D<class_BoxShape3D>`.
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A heightmap collision shape can also be build by using an :ref:`Image<class_Image>` reference:
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.. tabs::
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.. code-tab:: gdscript
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var heightmap_texture: Texture = ResourceLoader.load("res://heightmap_image.exr")
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var heightmap_image: Image = heightmap_texture.get_image()
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heightmap_image.convert(Image.FORMAT_RF)
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var height_min: float = 0.0
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var height_max: float = 10.0
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update_map_data_from_image(heightmap_image, height_min, height_max)
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.. rst-class:: classref-reftable-group
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Properties
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----------
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.. table::
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:widths: auto
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+-----------------------------------------------------+-------------------------------------------------------------+------------------------------------+
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| :ref:`PackedFloat32Array<class_PackedFloat32Array>` | :ref:`map_data<class_HeightMapShape3D_property_map_data>` | ``PackedFloat32Array(0, 0, 0, 0)`` |
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+-----------------------------------------------------+-------------------------------------------------------------+------------------------------------+
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| :ref:`int<class_int>` | :ref:`map_depth<class_HeightMapShape3D_property_map_depth>` | ``2`` |
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+-----------------------------------------------------+-------------------------------------------------------------+------------------------------------+
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| :ref:`int<class_int>` | :ref:`map_width<class_HeightMapShape3D_property_map_width>` | ``2`` |
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+-----------------------------------------------------+-------------------------------------------------------------+------------------------------------+
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.. rst-class:: classref-reftable-group
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Methods
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-------
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.. table::
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:widths: auto
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+---------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| :ref:`float<class_float>` | :ref:`get_max_height<class_HeightMapShape3D_method_get_max_height>`\ (\ ) |const| |
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+---------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| :ref:`float<class_float>` | :ref:`get_min_height<class_HeightMapShape3D_method_get_min_height>`\ (\ ) |const| |
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+---------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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| |void| | :ref:`update_map_data_from_image<class_HeightMapShape3D_method_update_map_data_from_image>`\ (\ image\: :ref:`Image<class_Image>`, height_min\: :ref:`float<class_float>`, height_max\: :ref:`float<class_float>`\ ) |
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+---------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
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.. rst-class:: classref-section-separator
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----
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.. rst-class:: classref-descriptions-group
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Property Descriptions
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---------------------
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.. _class_HeightMapShape3D_property_map_data:
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.. rst-class:: classref-property
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:ref:`PackedFloat32Array<class_PackedFloat32Array>` **map_data** = ``PackedFloat32Array(0, 0, 0, 0)`` :ref:`🔗<class_HeightMapShape3D_property_map_data>`
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.. rst-class:: classref-property-setget
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- |void| **set_map_data**\ (\ value\: :ref:`PackedFloat32Array<class_PackedFloat32Array>`\ )
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- :ref:`PackedFloat32Array<class_PackedFloat32Array>` **get_map_data**\ (\ )
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Height map data. The array's size must be equal to :ref:`map_width<class_HeightMapShape3D_property_map_width>` multiplied by :ref:`map_depth<class_HeightMapShape3D_property_map_depth>`.
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**Note:** The returned array is *copied* and any changes to it will not update the original property value. See :ref:`PackedFloat32Array<class_PackedFloat32Array>` for more details.
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.. rst-class:: classref-item-separator
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----
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.. _class_HeightMapShape3D_property_map_depth:
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.. rst-class:: classref-property
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:ref:`int<class_int>` **map_depth** = ``2`` :ref:`🔗<class_HeightMapShape3D_property_map_depth>`
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.. rst-class:: classref-property-setget
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- |void| **set_map_depth**\ (\ value\: :ref:`int<class_int>`\ )
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- :ref:`int<class_int>` **get_map_depth**\ (\ )
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Number of vertices in the depth of the height map. Changing this will resize the :ref:`map_data<class_HeightMapShape3D_property_map_data>`.
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.. rst-class:: classref-item-separator
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----
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.. _class_HeightMapShape3D_property_map_width:
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.. rst-class:: classref-property
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:ref:`int<class_int>` **map_width** = ``2`` :ref:`🔗<class_HeightMapShape3D_property_map_width>`
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.. rst-class:: classref-property-setget
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- |void| **set_map_width**\ (\ value\: :ref:`int<class_int>`\ )
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- :ref:`int<class_int>` **get_map_width**\ (\ )
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Number of vertices in the width of the height map. Changing this will resize the :ref:`map_data<class_HeightMapShape3D_property_map_data>`.
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.. rst-class:: classref-section-separator
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----
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.. rst-class:: classref-descriptions-group
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Method Descriptions
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-------------------
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.. _class_HeightMapShape3D_method_get_max_height:
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.. rst-class:: classref-method
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:ref:`float<class_float>` **get_max_height**\ (\ ) |const| :ref:`🔗<class_HeightMapShape3D_method_get_max_height>`
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Returns the largest height value found in :ref:`map_data<class_HeightMapShape3D_property_map_data>`. Recalculates only when :ref:`map_data<class_HeightMapShape3D_property_map_data>` changes.
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.. rst-class:: classref-item-separator
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----
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.. _class_HeightMapShape3D_method_get_min_height:
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.. rst-class:: classref-method
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:ref:`float<class_float>` **get_min_height**\ (\ ) |const| :ref:`🔗<class_HeightMapShape3D_method_get_min_height>`
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Returns the smallest height value found in :ref:`map_data<class_HeightMapShape3D_property_map_data>`. Recalculates only when :ref:`map_data<class_HeightMapShape3D_property_map_data>` changes.
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.. rst-class:: classref-item-separator
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----
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.. _class_HeightMapShape3D_method_update_map_data_from_image:
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.. rst-class:: classref-method
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|void| **update_map_data_from_image**\ (\ image\: :ref:`Image<class_Image>`, height_min\: :ref:`float<class_float>`, height_max\: :ref:`float<class_float>`\ ) :ref:`🔗<class_HeightMapShape3D_method_update_map_data_from_image>`
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Updates :ref:`map_data<class_HeightMapShape3D_property_map_data>` with data read from an :ref:`Image<class_Image>` reference. Automatically resizes heightmap :ref:`map_width<class_HeightMapShape3D_property_map_width>` and :ref:`map_depth<class_HeightMapShape3D_property_map_depth>` to fit the full image width and height.
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The image needs to be in either :ref:`Image.FORMAT_RF<class_Image_constant_FORMAT_RF>` (32 bit), :ref:`Image.FORMAT_RH<class_Image_constant_FORMAT_RH>` (16 bit), or :ref:`Image.FORMAT_R8<class_Image_constant_FORMAT_R8>` (8 bit).
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Each image pixel is read in as a float on the range from ``0.0`` (black pixel) to ``1.0`` (white pixel). This range value gets remapped to ``height_min`` and ``height_max`` to form the final height value.
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.. |virtual| replace:: :abbr:`virtual (This method should typically be overridden by the user to have any effect.)`
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.. |const| replace:: :abbr:`const (This method has no side effects. It doesn't modify any of the instance's member variables.)`
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.. |vararg| replace:: :abbr:`vararg (This method accepts any number of arguments after the ones described here.)`
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.. |constructor| replace:: :abbr:`constructor (This method is used to construct a type.)`
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.. |static| replace:: :abbr:`static (This method doesn't need an instance to be called, so it can be called directly using the class name.)`
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.. |operator| replace:: :abbr:`operator (This method describes a valid operator to use with this type as left-hand operand.)`
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.. |bitfield| replace:: :abbr:`BitField (This value is an integer composed as a bitmask of the following flags.)`
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.. |void| replace:: :abbr:`void (No return value.)`
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